# 10. What is a chemical reaction? A) when a liquid undergoes a phase change and produces...

###### Question:

10. What is a chemical reaction? A) when a liquid undergoes a phase change and produces a solid B) when a new element is formed by rearranging nucleons C) when two solids mix together to form a heterogeneous mixture D) when two liquids mix to form a homogeneous mixture E) when one or more new compounds are formed by rearranging atoms
17. Identify the reaction type: Al2O3(s) → O2(g) + Al(s) A) combustion B) combination C) decomposition D) single replacement
19. Identify the reaction type: CH4 (1) + O2(g) + CO2 (g) + H20 (g) A) combustion B) combination C) decomposition D) single replacement
19. Which of the following is not a common characteristic of a base? 1. a) it turns litmus pink/red 2. b) it feels slippery 3.c) it tastes bitter 4. d) all of these choices are common characteristics of bases

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